Solar ultraviolet radiation: The ultraviolet spectrum is in the range of 200-400 NM. It accounts for about 7% of the sun. It is the main cause of the initial photochemical reaction of plastics.
Solar ultraviolet energy: When the energy of a photon is equal to the bond energy of the plastic a, the light becomes active in photochemical activity. A large amount of radiation will speed up the process.
Oxygen and odor: Oxygen forms ozone under the action of light. The presence of ozone will accelerate the aging of plastics.
temperature. It is the fourth aging factor. Excessive temperatures will accelerate aging.
Rain and relative humidity. Water vapor can change the proportion of materials in a plastic. Thereby accelerating material aging.
microorganism. The plastic formulation contains plasticizers and greases, which are decomposed into alcohols, organic acids, etc. under the action of mold. Cause aging.
Therefore, according to the use environment of plastic products, formulas for anti-aging.
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